It depends most on the temperature of the gas.
Answer:

Explanation:
The density of an object is given by

where
m is the mass of the object
V is its volume
In this problem,
m = 42 kg
V = 22 m^3
Substituting into the equation, we find the object's density:

For the given problem, the amount of work done expressed in ergs is 3200 ergs.
Answer: Option A
<u>Explanation:
</u>
The work done on an objects are the force acting on it to move the object to a particular distance. So, work done on the object will be directly proportional to the force acting on it and the displacement.
Here, the force acting on the object is given as 0.010 N and the displacement of the object is 0.032 m. So, the work done on the object is


It is known that 
So, the work done can be expressed in
as,

It is known that
, so the conversion of units from Nm to erg will be done as follows:

Thus, work done in ergs is 3200 ergs.
Self-registering thermometers
are used for temperature or depth profile. It registers the maximum and minimum
temperature of the substance occurring in the interval of time between two
consecutive settings of the instrument.